Jean-Jacques Mercier

Mobile stations localization in a WLAN

This paper proposes a localization protocol of mobile stations in a WLAN (wireless local area network). The originality of this protocol is made of two parts (i) we use an object-relational database and (ii) we use a semaphore channel devoted to localize mobile stations in access point coverage areas and in virtual coverage areas via near-to-near relays. The database manages the knowledge of the mobile stations related to the access points (roaming) and an historical record of the last moves of the mobile stations. This protocol was written in Java, we also used the JDBC (Java DataBase Connectivity) classes to interoperate with the database.

Location of mobiles stations in a wireless LAN

This paper presents a proposition of a location system for mobiles stations moving in an indoor environment. The location is made via two different mediums: infrared and ultrasound. An architecture of wireless LAN including radio medium dedicated to communication, infrared light and ultrasound for location is also presented.

Proposition of an Identification Service on a Hybrid WLAN with Mobiles Stations

This article describes the identification protocol on a hybrid Wireless Local Area Network (WLAN) with mobile and fixed stations. Our objective is to add decision elements to optimize the routing in such a system. Our protocol is based on the use of distributed reception tables in mobile stations. This protocol has been developed in Java.